TRAINING READINESS
Know when to push, know when to back off
August 7th 2026・by Andrej Mihelič
GENTLER 101
RECOVERY
TRAINING
We all know how important it is to stay active. It is good for your health, your mood and your long-term wellbeing. But when your goal is also performance, not just being active, it becomes about finding the right balance between training and recovery. For the best results, training needs structure, and how hard you should train on any given day is really a question of recovery: how ready your body actually is.
Modern trackers, from smartwatches to rings, are getting more advanced, and can track well beyond your heart rate. Heart rate variability (HRV), respiratory rate, body temperature, blood oxygen, sleep duration and its phases, and more, can be a lot to make sense of on your own. Apps needed time to catch up and turn all that into something useful. The Outsiders introduced Training Readiness: a daily score built from your recent training, your sleep and what your body was doing overnight, pulled together into one signal you can act on. But, and this is important to understand, it does not make the decision for you. You are the one who knows whether you feel great, okay or poor, and you are the one who decides whether to train, and how hard. The score just gives that decision a clearer basis, one you weigh against how you actually feel.
A 96% Prime Training Readiness, seen at a glance on iPhone and Apple Watch Ultra.
What Goes Into the Score
Training Readiness pulls from three inputs.
The first is your training load: how hard you have trained recently, measured against what your body is currently conditioned to handle. This acute-to-chronic relationship is called Training Load Ratio. The heavier and more sudden the recent load, the more recovery your body needs before it can absorb more.
The second one is sleep quality: how well you actually slept, not just how long you were in bed. Duration matters, but so does getting enough deep and REM sleep, the stages where your body and brain do most of their repair work.
And there are your overnight body metrics: sleeping heart rate, HRV, wrist temperature, respiratory rate and blood oxygen. Each one reflects a different part of how your body is coping with stress and recovery, and together they build a fuller picture than any single reading could. These are covered in depth in Body Metrics: What Your Body Is Telling You Overnight.
On top of these three inputs, Training Readiness also tracks short-term shifts in your overnight metrics, catching a trend moving in the wrong direction before it turns into a genuine problem.
Recovery is a score you will find in most health and fitness apps. It is great for knowing how rested you are on a day to day basis. But when your main goal is knowing how hard to train, you need another component too: your training load. That is why The Outsiders went with Training Readiness instead, a combination of your training load history and your recovery, read together.
That combination matters because either half on its own can mislead you. You might be fully recovered, but if you have trained far more than usual over the last few days, you still need to rest your muscles and joints to avoid injury, no matter how low your sleeping heart rate or how great your sleep was. The reverse is also true: you might have trained little or not at all for a few days, but if your body metrics are out of their normal range, or you had a genuinely bad night's sleep, it is still best to take another day off. If you want to improve performance, it can be hard mentally to lose a day or two of quality training, but always remember that if you get injured, or your body is tired due to poor sleep or something being off, you can lose much more than just a day or two of training.
The Five Levels, and What to Do With Them
The score maps to five levels, from Poor to Prime, each pointing towards a different kind of day. High readiness makes a strong case for demanding work: intervals, a long ride, a hard effort in the anaerobic or high aerobic zone. Low or poor readiness makes just as strong a case for backing off. Either way, it is a case, not a verdict.
Knowing why your readiness is where it is matters as much as the number itself, and it is exactly the kind of thing that should factor into your decision. A hard training block, a few rough nights or a body metric trending the wrong way all tell a different story, and each one points to a different response. A dip after a big training week is expected and will likely resolve with a day or two of easier work. The same dip with no obvious cause is worth paying closer attention to, and worth weighing against how your body actually feels before you decide what to do.
Training Readiness, from Poor to Prime: one score, a clearer sense of the day ahead.
Why It Is Worth Tracking Daily
Recovery is where adaptation happens. Training breaks the body down; rest is what lets it rebuild stronger. The most common way athletes stall long-term progress is not laziness, it is accumulated overreach: pushing again and again before the previous session has been absorbed. Sports science draws a clear line here between functional overreaching, a short, deliberate dip that comes good with proper rest, and non-functional overreaching, where recovery stretches from days into weeks and fitness is lost in the process.
A readiness score helps you tell the two apart: when to back off, and when you genuinely have the capacity to push. It does not replace how you feel, it sharpens it. That is the whole point: fewer guesses, fewer days lost to training through fatigue that was never going to produce a fitter version of you.
Reading the Trend
Training Readiness works best read alongside your other data, not on its own. Training load is already one of its inputs, so a spike or drop in Training Load Ratio will show up in your readiness score too. What checking TLR directly tells you is whether training load is the reason your score moved, or whether sleep or a body metric is behind it instead. Use it to decide which training zone to aim for that day: high readiness supports time in the high aerobic or anaerobic zone, low readiness is a reason to stay low aerobic or take the day off completely.
It is also important to follow your week-to-week pattern and see where in your training cycle you are. Training Summary helps with that: up to eight weeks of training load, distance, duration, elevation gain, active energy and number of sessions, day by day, so you can see whether it is time for an active recovery week. Read together, Training Readiness and Training Summary give you a clearer sense of what to do next: one tells you about today, the other about the weeks around it.
Your workout summary, meanwhile, shows you how your body responded to a single session, closing the loop between what you planned and what you did.
Read as a trend rather than a single number, Training Readiness tells you something a single morning never can: whether the balance between training and recovery you are striking is one your body can sustain.
How I Use It
I would train every day if I could. But as I got older, I noticed my body needs more and more recovery. Well into my forties, I can still perform at a good level on a run or a ride, just not at the intensity of my twenties. The biggest difference now is that I have to plan smart.
Training Readiness is something I rely on daily, and knowing how it works, I trust it fully. It's there to help me decide, not decide for me. In my training pattern, I follow hard, all-out workouts with easier sessions or full rest days, so most days the score just confirms I'm on track.
But when my score surprises me, dropping when I expected it to be Good, I check body metrics, daily values, and 7-day trends. I learned the hard way what happens when you ignore red flags and are blinded by the wish to improve at all costs. Having Training Readiness back then would have saved me from overtraining.
In the end, it's about finding balance. Training Readiness is there to help me decide, but I'm the one who knows how I feel, and I should never ignore what my body is telling me. If I feel great on a day my readiness is low, that's exactly when I need to be extra cautious. I pay closer attention to understand what my body really needs.
Andrej Mihelič, co-founder at Gentler Stories LLC
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Frequently Asked Questions
What is Training Readiness?
Training Readiness is a daily score that shows how prepared your body is to train, based on your recent and long-term training load, sleep quality, overnight body metrics and short-term shifts in those metrics.
Who should I trust, Training Readiness or how I feel?
Training Readiness is there to help you make a decision, but you are the one making it. Be honest with yourself, though. Many people do not know when to stop, they like training, they like training hard, and some push on even when tired. Low Training Readiness should not be ignored, especially when your Training Load Ratio has been high for several days running, or your sleeping heart rate has sat above its normal range for a while.
Why did my Training Readiness score drop suddenly?
It could be a hard training block your body is still absorbing, a few nights of poor sleep, or an overnight body metric trending the wrong way. The score flags the drop; looking at your recent training and sleep tells you why.
How is Training Readiness different from Training Load Ratio?
Training Load Ratio looks specifically at the balance between your recent and long-term training load. Training Readiness includes that same load balance but adds sleep quality and overnight body metrics for a fuller picture of your recovery.
How often should I check my Training Readiness score?
Daily, ideally first thing, so you can plan the session ahead. Also look at the trend in your Training Load Ratio, sleep and body metrics, as more meaningful than any single morning's number.
